Warning device for presence of an obstacle on the ground



FIG. 1 is a front, right perspective view of the warning device forpresence of an obstacle on the ground, showing my new design;

FIG. 2 is a left side elevational view thereof, the right sideelevational view being a mirror image thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a front, right perspective view thereof, shown in a foldedcondition.

The broken lines illustrate portions that form no part of the claimeddesign.

CLAIM The ornamental design for a warning device for presence of anobstacle on the ground, as shown and described.